Perspectives on the Land Use History of North America PDF Download
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Author: Thomas D. Sisk
Publisher:
ISBN:
Category : Land use
Languages : en
Pages : 122
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Book Description
Author:
Publisher:
ISBN:
Category : Land use
Languages : en
Pages : 104
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Book Description
Ecological change is constant and profound, yet often occurs at temporal and spatial scales that are difficult to measure and interpret. This publication demonstrates how diverse data bases, archived in different formats and at numerous locations, can be brought together to provide an integrated perspective on the relationship between land use and landcover change. The authors provide the historical context for interpreting recent landcover change in several regions of North America and articulate the value of a comprehensive, continental land use history for guiding environmental policy and management decisions during the coming century and beyond.
Author: Thomas D. Sisk
Publisher:
ISBN:
Category : Land use
Languages : en
Pages : 122
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Author:
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Category : Geology
Languages : en
Pages : 440
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Author:
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Category : Biogeography
Languages : en
Pages : 92
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Book Description
This volume represents a first attempt at holistically classifying and mapping ecological regions across all three countries of the North American continent. A common analytical methodology is used to examine North American ecology at multiple scales, from large continental ecosystems to subdivisions of these that correlate more detailed physical and biological settings with human activities on two levels of successively smaller units. The volume begins with an overview of North America from an ecological perspective, concepts of ecological regionalization. This is followed by descriptions of the 15 broad ecological regions, including information on physical and biological setting and human activities. The final section presents case studies in applications of the ecological characterization methodology to environmental issues. The appendix includes a list of common and scientific names of selected species characteristic of the ecological regions.
Author:
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Category :
Languages : en
Pages : 556
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Category : Forests and forestry
Languages : en
Pages : 666
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Author:
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Category : Forests and forestry
Languages : en
Pages : 842
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Author:
Publisher: PediaPress
ISBN:
Category :
Languages : en
Pages : 647
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Author: Pavel Kindlmann
Publisher: Springer Science & Business Media
ISBN: 9048186013
Category : Science
Languages : en
Pages : 197
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Book Description
This book presents the results of recent research on aphid population dynamics and ecology relevant to current environmental changes resulting from global wa- ing. It incorporates a selection of the contributions presented at the International Symposium on Aphids in Fremantle, Australia, in October 2005, plus some ad- tional invited chapters. The objective was to incorporate the major issues in the ?eld and simultaneously create a closely interrelated and integrated volume. The ?rst chapter sets the scene. Kindlmann and Dixon present a critical review of existing models of aphid population dynamics, examine the biological assumptions that are incorporated in the models and present one of the latest models of aphid metapopulation dynamics. They conclude that natural enemies are unlikely to affect aphid population dynamics late in a season, but in some years may have an effect very early in the season, when aphid colonies are still small and predators might be able to reduce the numbers of colonies. The question, whether aphids will move to different locations, adapt to the change in conditions in their current habitat or go extinct is discussed by Ameixa. She concludes that the distributions of aphids are most likely to change, with the distribution of each species moving globally as their preferred habitat moves in response to changes in the climate, which may be more dif?cult than in the past because of habitat fragmentation and habitat loss.
Author: United States. Congress. Senate. Committee on Energy and Natural Resources. Subcommittee on Forests and Public Land Management
Publisher:
ISBN:
Category : Animal populations
Languages : en
Pages : 164
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Book Description
